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Old 03-25-2009, 12:42 AM   #1
MNsuby
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Default I need help with my header

WHAT Is the horrible vibration from?????

ok so today i installed a borla replica header

it sounds odd.. i dont know if its because it needs to be broken in or what

but, there is a wierd vibration and it sounds like a bad leak

the leak also sounds raspy.. so if i heat wrapped them would that raspiness and vibration go away/...

someone help

OR is it pulsing on the tubing because its so thin? heat wrap will get rid of the pulsing right?
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Last edited by MNsuby; 03-26-2009 at 03:29 AM.
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Old 03-25-2009, 02:24 AM   #2
Audi20Tdriver
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duuuuuude, if it sounds like a leak, likely it is a leak. There is a big difference between a leak and oter sounds.. check your fitments. My borla replicas were pretty thin as are almost any aftermarket header. they did make a noise but it was more a of a ticking sound from the pulses. Wrapping the headers will remove the clicky pulse they make outside the car; however, in your location you really need to be careful as the wetness and salt combined with the wrap will either deteriorate those very quickly, crack them or both depending upon your exposure. Arizona was a good location for me to wrap them.. no moisture or salt.. and it would have helped performance wise and the exhaust flow temps are higher and it helps the scavenging effect. Maybe look into having them coated with jet hot or something like that vs wrapped.

hope that helps
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Old 03-25-2009, 02:28 AM   #3
Audi20Tdriver
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PS.. when I threw those on the RS.. I got different gaskets then the ones it came with. If you are leaking at your gaskets, get OEM ones and use those with the OEM bolts for the replicas.. same with the connection to your cat.
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Old 03-25-2009, 02:30 AM   #4
MNsuby
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ya it sounds more ticky than a leak.. its kind of annoying

if they crack i know a guy that will weld them lol

im gonna drive it for while and see what happeneds

i think maybe they just need to be broken in for while
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Old 03-25-2009, 02:32 AM   #5
MNsuby
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and yes i bought all new gaskets. the guy that helped me is an exhaust guy and he made sure there would be no leaks.

so what im thinking is that its just the pulseing/ticking sound.
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Old 03-25-2009, 02:45 AM   #6
Audi20Tdriver
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it is a bit annoying.. but it sounds 150% better warmed up. it's night and day but that tick never goes away. the corrosion from the wrap would be beyond and easy fix weld crack but it would fix the tick.. again.. look into getting them coated.. maybe wrap it then coat that.
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Old 03-25-2009, 02:47 AM   #7
MNsuby
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thermal coated? jet hot

what kind of coating you reccomend
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Old 03-25-2009, 04:01 AM   #8
Hites
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That's just how they sound. At least on the singleports, they are.
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Old 03-26-2009, 03:30 AM   #9
MNsuby
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bump.. i need help with the vibration. it sounds like its coming from header and where it bolts to cat

ahhhh!
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Old 03-26-2009, 07:57 AM   #10
smithrcing17
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its prolly all the useless heat shields from under your car, since you put on the borla headers there is ALOT more vibration going on and i know it made mine sound like ass until i ripped them all off, also if you changed your catback i know the borla reps sat on mine just alittle off from the stock headers and it made my catback sit up against the rear driveshaft gaurd, its a big heavy metal piece so i ripped it off(i figure i saved some weight too=])
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Old 03-26-2009, 02:12 PM   #11
MNsuby
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alright ill check that out today thanks smith
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Old 03-26-2009, 06:24 PM   #12
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np man, hopefully that fixes it, if you watch my vid you will hear what i mean by it sitting up against my driveshaft gaurd, (its at the end of the vid)

http://www.youtube.com/watch?v=_GQ7UgTYc1M
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Old 03-27-2009, 12:29 AM   #13
MNsuby
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ahh thanks for the vid.. im gonna work on it tonight
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Old 03-27-2009, 03:26 AM   #14
07ImprezaMB
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Question

I just a week ago put full exhaust on my 2.5i, borla header, stromung high flow cat, apexi n1 catback. And from the outside of the car it sounds good, but on the inside i hear the same thing, and i thought that it sounds like it was coming from the header or where the header bolts onto the cat pipe. So i got a torque wrench cranked it up a lil higher and tightened every bolt until my lil arms couldnt crank anymore. I know there is no exhaust leak, and the thing is it only makes the sound under 3000 rpms and once i drive it for about 15 to 20 mins it goes away....... i think it may just be my new headers breaking in and still being cold when i start it, i dont know...
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Old 03-27-2009, 03:58 AM   #15
rougeben83
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check for any heatshield near the exhaust pipes. This is especially true if youre getting an RPM specific rattling.

I never got any rattling on the 2 sets of headers and exhaust that I had on mine.
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Old 03-27-2009, 11:31 PM   #16
MNsuby
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ya it was the huge heatshield above where header connects to cat

thanks for al the help guys
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